/*
* $Id: GlyfWriter.java,v 1.17 2004/09/23 07:47:39 eed3si9n Exp $
*
* $Copyright: copyright (c) 2003, e.e d3si9n $
* $License:
* This source code is part of DoubleType.
* DoubleType is a graphical typeface designer.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This Program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* In addition, as a special exception, e.e d3si9n gives permission to
* link the code of this program with any Java Platform that is available
* to public with free of charge, including but not limited to
* Sun Microsystem's JAVA(TM) 2 RUNTIME ENVIRONMENT (J2RE),
* and distribute linked combinations including the two.
* You must obey the GNU General Public License in all respects for all
* of the code used other than Java Platform. If you modify this file,
* you may extend this exception to your version of the file, but you are not
* obligated to do so. If you do not wish to do so, delete this exception
* statement from your version.
* $
*/
package org.doubletype.ossa.truetype;
import java.awt.Point;
import java.io.IOException;
import java.util.ArrayList;
/**
* @author e.e
*/
public class GlyfWriter extends FontFormatWriter {
private ArrayList<TTGlyph> m_glyphs;
private LocaWriter m_loca;
private MaxpWriter m_maxp;
private HeadWriter m_head;
private HdmxWriter m_hdmx;
public GlyfWriter(LocaWriter a_loca, MaxpWriter a_maxp,
HeadWriter a_head, HdmxWriter a_hdmx) {
super();
m_loca = a_loca;
m_maxp = a_maxp;
m_head = a_head;
m_hdmx = a_hdmx;
m_glyphs = new ArrayList<>();
}
public void write() throws IOException {
m_hdmx.setNumGlyphs(numOfGlyph());
m_maxp.setNumGlyphs(numOfGlyph());
m_loca.m_offsets.clear();
for (int i = 0; i < m_glyphs.size(); i++) {
TTGlyph glyph = m_glyphs.get(i);
writeGlyph(glyph);
m_hdmx.updatePixelWidth(i, glyph);
}
m_loca.m_offsets.add(size());
}
public int add(TTGlyph a_glyph) {
m_head.updateMax(a_glyph.getMax());
m_head.updateMin(a_glyph.getMin());
m_glyphs.add(a_glyph);
return m_glyphs.size() - 1;
}
public int numOfGlyph() {
return m_glyphs.size();
}
public TTGlyph getGlyph(int a_index) {
return m_glyphs.get(a_index);
}
private void writeGlyph(TTGlyph a_glyph) throws IOException {
m_loca.m_offsets.add(size());
if (a_glyph == null) {
return;
}
if (a_glyph.isSimple()) {
writeSimpleGlyph(a_glyph);
} else {
writeCompoundGlyph(a_glyph);
}
pad();
}
/**
* @param a_glyph
* @throws IOException
*/
private void writeSimpleGlyph(TTGlyph a_glyph) throws IOException {
if (a_glyph.getNumOfContours() == 0) {
return;
}
m_maxp.updateNumOfContours(a_glyph.getNumOfContours());
writeInt16(a_glyph.getNumOfContours());
writeMinMax(a_glyph);
int i;
for (i = 0; i < a_glyph.getNumOfContours(); i++) {
writeUInt16(a_glyph.getEndPoint(i));
}
int numOfInst = a_glyph.getNumOfInstructions();
m_maxp.updateSizeOfInstructions(numOfInst);
writeUInt16(numOfInst);
for (i = 0; i < numOfInst; i++) {
writeUInt8(a_glyph.getInstruction(i));
}
for (i = 0; i < a_glyph.getNumOfFlags(); i++) {
int flag = a_glyph.getFlag(i);
writeUInt8(flag);
}
// update num of points
m_maxp.updateNumOfPoints(a_glyph.getNumOfPoints());
int lastX = 0;
for (i = 0; i < a_glyph.getNumOfPoints(); i++) {
Point point = a_glyph.getPoint(i);
writeInt16(point.x - lastX);
lastX = point.x;
}
int lastY = 0;
for (i = 0; i < a_glyph.getNumOfPoints(); i++) {
Point point = a_glyph.getPoint(i);
writeInt16(point.y - lastY);
lastY = point.y;
}
}
/**
* @param a_glyph
* @throws IOException
*/
private void writeCompoundGlyph(TTGlyph a_glyph) throws IOException {
int i;
m_maxp.updateNumOfCompositePoints(a_glyph.getNumOfCompositePoints());
m_maxp.updateNumOfCompositeContours(a_glyph.getNumOfCompositeContours());
writeInt16(-1);
writeMinMax(a_glyph);
int numOfGlyphs = a_glyph.getNumOfFlags();
m_maxp.updateNumOfComponentElements(numOfGlyphs);
m_maxp.updateComponentDepth(a_glyph.getComponentDepth());
for (i = 0; i < numOfGlyphs; i++) {
writeUInt16(a_glyph.getFlag(i));
writeUInt16(a_glyph.getGlyfIndex(i));
writeInt16(a_glyph.getArg1(i));
writeInt16(a_glyph.getArg2(i));
}
}
/**
* @param a_glyph
* @throws IOException
*/
private void writeMinMax(TTGlyph a_glyph) throws IOException {
Point min = a_glyph.getMin();
Point max = a_glyph.getMax();
writeFWord(min.x);
writeFWord(min.y);
writeFWord(max.x);
writeFWord(max.y);
}
protected String getTag() {
return "glyf";
}
}